Linksys RV082
The RV082 is an X-Scale based 8-port router with dual-WAN support.
Hardware Highlights
| CPU | Ram | Flash | Network | USB | WiFi | Serial | JTag |
|---|---|---|---|---|---|---|---|
| IXP425 | 32MB | 16MB | 8x1 | No | No | Yes* | Yes* |
- Requires opening the unit and soldering headers.
Installation
Backup Original Firmware
The first step is to make a backup copy of the original firmware. This allows the option of restoring the router to the original state. In order to do this, telnet access must be enabled by accessing the router as follows:
http://192.168.1.1/sysinfo123.htm?ConsoleSimulation=1
Then the python-based script
jungo-image.py is used to make a backup image using the command:
python jungo-image.py -p admin 192.168.1.1
Hardware
Info
| Architecture: ARM |
| Vendor: Intel |
| Bootloader: OpenRG |
| System-On-Chip: X-Scale IXP425 |
| CPU Speed: 533 Mhz |
| Flash-Chip: Intel |
| Flash size: 16 MiB |
| RAM: 32 MiB |
| Ethernet: ADM6999 switch |
| Serial: Yes |
| JTAG: Yes |
Opening the case
Serial
There is a 10-pin unsoldered header on the motherboard.
| Pin | Signal | Pin | Signal |
|---|---|---|---|
| 1 | GND | 2 | NC |
| 3 | GND | 4 | RTS/CTS? |
| 5 | GND | 6 | RTS/CTS? |
| 7 | GND | 8 | RXD |
| 9 | GND | 10 | TXD |
GND, RXD, TXD is enought to communicate with device.
WARNING! You need a level converter like MAX232 to connect a PC. RV COM port have 3.3V levels instead of 12V of RS-232.
JTAG
How to connect to JTAG interface, and how to reflash the device with JTAG tools - no longer developed. Resumed as UrJTAG
See jtag.cable for more JTAG details.
GPIO
| Bit | IO | Function |
|---|---|---|
| 0 | O | switch reset |
| 1 | ? | ? |
| 2 | ? | ? |
| 3 | ? | ? |
| 4 | ? | ? |
| 5 | O | I2C SCL - RS5C372A |
| 6 | I/O | I2C SDA - RS5C372A |
| 7 | ? | ? |
| 8 | I | HW rev |
| 9 | I | HW rev |
| 10 | ? | ? |
| 11 | O | LED - DMZ mode |
| 12 | ? | ? |
| 13 | I | Reset button |
| 14 | O | LED - Diag |
| 15 | ? | ? |
Specific Configuration
Interfaces
Buttons
There is one soldered software reset button and one not soldered hardware reset button.
inbox/linksys/rv082.txt · Last modified: 2010/08/24 16:23 by josevasconcellos


